By a reciprocal cross between two species, I mean the case, for instance, of a stallion-horse being first crossed with a female-ass, and then a male-ass with a mare: these two species may then be said to have been reciprocally crossed.
Why should there often be so great a difference in the result of a reciprocal cross between the same two species?
The differences being of so peculiar and limited a nature, that, in reciprocal crosses between two species the male sexual element of the one will often freely act on the female sexual element of the other, but not in a reversed direction.
This latter statement is clearly proved by reciprocal crosses between the same two species, for according as the one species or the other is used as the father or the mother, there is generally some difference, and occasionally the widest possible difference, in the facility of effecting an union.
In this study, we performed a reciprocal cross
between populations of the two species described earlier and two cycles of backcrossing between the hybrid populations and the bay scallop, with the aim of broadening the genetic basis of Argopecten irradians for use in future selective breeding programs.
Each variable from the reciprocal cross
experiments (larval survival, potential fecundity, and wing length) was analyzed using a two-way ANOVA, with the origin of the eggs ("original host") and the host rearing plant ("rearing host") as sources of variation.
ABSTRACT : A simulation study was conducted to evaluate the effect of reciprocal cross
on the detection and characterization of parent-of-origin (POE) QTL in [F.sub.2] QTL populations.
This breach of Haldane's rule does not arise in the reciprocal cross
, as only sterile adult female progeny are produced.
Reciprocal combining ability: The F1 reciprocal cross
(CIM-554 A- CIM-506) having the maternal parent as good general combiner (Table 7), manifested maximum reciprocal effects for bolls per sympodia (1.27) and seed cotton yield (51.46).
ABSTRACT: A simulation study was conducted to evaluate the effect of reciprocal cross
on the detection and characterization of Mendelian QTL in [F.sub.2] QTL swine populations.
[F.sub.1] seeds from the cross P21/CAS-14 averaged 50.1 [+ or -] 9.4 g [kg.sup.-1] stearic acid, whereas those of the reciprocal cross
averaged 63.7 [+ or -] 8.7 g [kg.sup.-1], indicating dominance of wild-type over high stearic acid content.
hexagona pollen will be referred to as IF x IH seeds, whereas those resulting from the reciprocal cross
will be referred to as IH x IF seeds.